Staurastrum boreale West et G.S. West
Reference: West & G.S. West 1905
Remarks: Staurastrum boreale is original described as 3-radiate. Later 4-radiate specimen were described as var. quadriradiatum Korshikov 1941 and as var. robustum Messikommer 1951. Further investigation will have to show whether this is really a separate variety or just a 4-radiate facies of the nominate variety.
C0667
2017060009
C0667
2017060009
C0667
2017060009
2017060-009
Front view
USA (WA)
2017060-009
Apical view
USA (WA)
2017060-009
Apical view
USA (WA)
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